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Open Access The Effect of The Endocarp, Heat-Shock and Short-Term Storage On The Germination of Persoonia hirsuta (Proteaceae) Seeds

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Persoonia are Proteaceous shrubs or small trees that have a woody endocarp as part of the dispersal unit. Seeds with this structure are often difficult to germinate. The endangered Persoonia hirsuta (hairy geebung) is a highinterest plant species for which no previous seed biology research has been conducted. In the present study we investigated the seed germination response to heat and short-term ex situ storage at low and room temperature. The effect of pre- and post-storage endocarp removal on germination was also examined. Germination success was significantly reduced when the endocarp was removed prior to storage due to increased microbial contamination coming from within the seeds. There was no significant effect of heat-shock on germination. Based on these findings, it is recommended that the endocarp be retained when storing or direct-sowing P. hirsuta seeds to enhance the likelihood of producing viable seedlings.

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Keywords: GERMINATION; HAIRY GEEBUNG; MICROBIAL CONTAMINATION; PROTEACEAE; PYRENE; SEED BIOLOGY

Document Type: Research Article

Publication date: April 1, 2019

This article was made available online on April 12, 2019 as a Fast Track article with title: "The effect of the endocarp, heat-shock and short-term storage on the germination of Persoonia hirsuta (Proteaceae) seeds".

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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